Very early balloons were made of animal bladders since
animal bladders have the ability to stretch without breaking. Most
balloons today are made of rubber, latex, polychloroprene and nylon fabric.
The majority of balloons for decorative purposes are made of either natural
latex or metalized plastic films. The basic definition of a balloon is a
flexible bag designed to be inflated and in most cases with helium or hot air.
However, a balloon can be filled with other gases and even water.

Balloons are typically filled with
helium so that they will float. However, latex
balloons will only float for 8-15 hours unless you use a
product called hi-float. The reason is that helium
atoms escape through the small holes in the latex balloons.
This also occurs with mylar balloons. But with mylar
balloons the film is less permeable and therefore the atoms
escape much slower. That is why there is a difference
in float times between balloon types and manufactures.
Each manufacture of balloons uses different manufacturers
techniques, hold different patents which means differences
in final balloon products. We sell only balloons made
by the better balloon manufacturers.